The Department of Children and Family Services turned up at Mueller's home just hours after she returned from the hospital, TMZ has now claimed.

Investigators - rumoured to be at the property for six hours - allegedly searched the house for signs of drug use, though they reportedly found nothing except a cigarette butt.

Meanwhile, Mueller was allegedly asked whether she smokes in front of her two children. The boys were also reportedly checked for signs of physical abuse and woken up to be asked about sexual abuse, though officers are thought to have found nothing.